You can mass enroll large groups of students into a single class. Go to Quick Enroll, select the class and then use the filters or search for the students and select them.
This is best used for free classes since you will still need to go and record a payment if there are fees associated with the classes.
** Note: we also recommend that you restrict the number of enrollments at one time to between 10 and 15. Enrollment and invoice handling is complex and more than 10 to 15 will take too long.